Carbureter.



R. HODGKINS L S. CLIFTDN.

CARBURETER. APPLICATION FILED IEB. 2, 191s.

Patented Jan. 7. 1919.

UNITED sTATEs -PATENT oEEIcE.

EEGINALD H oDGxINs ANn SYDNEY CLIFTON, or Los ANGELES, CALIFORNIA, AssIGNoIts To HAEMON H. FULTON, 0E Los ANGELES, CALIFORNIA.

CAEBUEETEE.

Specification of Letterslatent.

Patented Jan. 7, 1919.

Application led February 2, 1918. lSerial No. 215,081.

To all lwhom 'it may concern.:

Be it known that we, REGINALD HoncxINs, and SYDNEY CLIFTON, citizens of the United gines, and has special reference to novel improvements in carbureters adapt-ed to be utilized in connection with the engines of automobiles, motor cycles, aeroplanes and i use of li uid fuel and shall at all 'times dev liver to t e engine a proper explosive mixture irrespective of the speed of the engine.

Another-'object of the invention is to so construct the carbureter that the mixing chamber and auxiliary mixing chamber Will be adjacent. and the composition mixture therein shall be constant at all speeds of the engine. .A t

A further obJect of the invention is to provide a lnovel carbureter so constructed 'l that when the engine is caused to run at high speed the4 ratio of. the air to the fuel will be increased proportionately.

A further object of this invention is to insure a thorough spraying action of the liquid fuel, and thereby to attain a thorough admixture of the air and fuel within the mixing chamber after it leaves thev ioat chamber. f

A further object of the invention is .to provide a carbureter which shall be capable of all necessary adjustment. and which may .be readilytaken apart and then reassembled without change in the relations of the adj ustable` parts.

The foregoing and such other objects as may, ap ear fromthe ensuing description are attained) bythe construction. arrangement, location and combination of the parts hereinafter more fully described, illustrated in the` accompanying drawings and particu larly pointed -out in the claims appended hereto, it being understood thatl slight M5 changes in the form, proportion and minor 'in full lines.

details of the construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the iiivention.

The invention will be more readily understood by reference to the accompanying drawings, formingla part of this 'speciiczb tion, and in whic Figure 1, is an end elevation of the improved carbureter embodying our invention. Fig. 12, is a cross-sectional view taken through the carbureting chambers, showing the connection with the iioat chamber in full to the manifold partly in section and partly Fig. 3, is a cross-section taken through the carbureter and float chamber.'

Fig. 4, is a cross-section taken on the line Fig. 2, and I Fig. 5, is a perspective view of the mixture controlling valve removed from the carbureter casing. I

S'milar numerals of reference are employed to designate corresponding parts throughout the several views in the" drawings. ,A

. In carrying out our invention as illustrated and which. shows a preferred construction, the numeral 1 indicates a standard f ioat chamber constituting the liquid fuel or gasolene reservoir, provided with a float 2."

connected with a valve 3, which is adapted to regulate the supply of gasolene to the said chamber through the gasolenc supply pipe 4, and the dct 5. The bottom of said chamber 1 is internally screw-threaded at its central portion 6. to engage with the lowermost screw-threaded end portion of an upright tubular member 7, which is connected to the chamber by a securing nut 8, said member passing upwardly through the chamber and terminating with an outwardly flaring integral upper portion forming a cone-shaped connection 9. which is suitably and rigidly secured to the lower portionof the carbureter casing `10 and intermediate said member l 7 is formed an integral lateral extension l11,

4Formed within the carbureter casing'lO, 110* is theimixing chamber 16, lwhich is rotatably mounted a regulating valve 16, said mixing chamber being separated from an auxiliary mixing chamber 17, by an interposeddiaphragm 18, in which are formed a plurality of ports 19, the leading edge 19" 20, to which lever is connected a rod 24. or

other suitable means for properly operating the said valve. The secondary valve 25, ro tatablymounted Within the auxiliary chamber '1s suitably operated by an arm 26 connected at one end to the valve 25, and at the other end to a rod 27, or other desirable operating means.' The valve 16 is formed at its front end portion with an annular flange 28 with a. port 29'adaptedto register with the port 30 formed through the cover or cap plato 22. and the rear end portion of said valve 16 is provided With a flange 30 in the form of a double quadrant 31, this arrangement being provided'so that as the gasolene and air mixture is drawn up through the cnical connection 9 into the mixing chamber, it gets a further supply of air through the port 30 when the valve has been l partly ,rotated,thus` allowing a richer mix-4 ture to start on and a more generous supply of air as the valve opens.

lIt will be perceived that the quadrants 31 are so disposed that they can completely close the ports 19. and as the valiLe 16 is ro- Ato tated it begins bymaking a small port opening at the leading edge 19 of the ports 19, gradually admitting an increased supply of the gaseous mixture as itcomes from the float chamber portion; further, as the port 29 in said valve begins to register with the 4port 30 in lthe cover plate 2 2, a supply of fresh air strikes the first gaseous mixture andv serves to further carburet it, with the advantage'tliat all the airis not sucking direct-upon lthe spray nozzle and also contributes to a more intimate and better mixingofthe fuel.

It will be seen that the mixture on passing through the ports ,19 on its'way to the intake manifold is compelled to pass through an auxiliary chamber 17, Where it receives a further supply of fresh air through the ports 32' formed in the casingl() `when the secondary valve 25 is rotated. This secondary Vvalve is normally heldin closed position by a coil spring 33. as she-wn in Fig. 4. one end of said spring being fxe'dly' secured to the f boss 211:'and'itheother end secured to the arm 26 connected to the rod 27 by which the entirely cut oil' by closing the valve 16 and by opening the secondary valve 25, so that the engine can draw pure air While the car is running down hill and thereby serve to thoroughly scavenge the engine cylinders.

It Will be obvious that the form and disposition of the ports 19 and the valve 16` furnish complete control over the gaseous mixture, since a very small quantity of fuel and a large percentage of air can be obtained by partially opening the valve 16, or a rich mixture can be obtained by reversing the process.

The operation of our improved carbureter Will be readily obvious from the construction hereinbefore described, and as illustrated in theaccompanying drawings.

Having thus described our invention what We claim and desire to secure by Letters Patent is: f

1. A carbureter, comprising a casing having a depending portion, a mixing chamber.l an auxiliary mixing chamber adjacent to the first named chamber. a diaphragmbetween said chambers provided with a plurality of ports therethrough, and a rotatably mounted valve within each of the said chambers.

2. A carbureter` comprising a casing, a mixing chamber formed Within the casing, anv auxiliary mixing chamber formed Within the casing adjacent the first named chamber.I a diaphragm integral with the casing for separating the said chambers provided with a plurality of ports therethrough. and a valve rotatably mounted within each of the said chambers.

3. A carbureter. comprising a casing, a mixing chamber formed within the casing, an auxiliary chamber formed Within said casing adjacent to the first named chamber, a diaphragm for separating the said chambers provided with a plurality of ports therethrough. a valve rotatably' mounted within the mixing chamber with a double quadrant forming apart thereof. and a valve rotatably mounted within the auxiliaryV chamber with a plurality `of ports therethrough.

4. A carbureter. comprising* a casing. a mixing chamber formed within the casing, an auxiliary mixing chamber formed within the casing adjacent said mixing' chamber, a

diaphragm for separatingthe chambers formed with a plurality of ports therethrough, a valve rotatably mounted in the mixing chamber having a double quadrant formed at one end and an annular flange at its other end provided with `a port, and a valve rotatably mounted in the auxiliary `chamber provided with a plurality ofports.

5. A carbureter comprising a casing, ra cover plate secured to one end of the casing having an air port formed therethrough, a mixing -chamber formed Within the casing, an auxiliary chamber Within the casing acljacent. to said mixing chamber, an integral diaphragm adapted to separate the said chambers having a plurality of ports therethrough, a valve rotatably mounted within the mixing chamber provided with' means `iary mixing chamberl adjacent said'mixing chamber, a diaphragm for separating said chambers, a valve rotatably mounted Within the mixing chamber, and a valve rotatably mounted Within the auxiliary chamber.

7. A carbureter, comprising a casing' having acover plate secured at one end thereof,

andl al pipe connection at the other end, a

, mixing chamber formed within the casing,

an auxiliary mixing chamber formed within the casing adjacent to the mixing chamber, a diaphragm integral with the casing -for separating the said chambers provided withV ports therethrough, a valve rotatably mountedwithin the mixing chamber having means for registering with said orts, and a valve rotatably mounted Within the auxiliary chamber provided with a plurality of airl ports.

8. A carbureter, com rising a casing, 'a

cover plate secured to t e casmg having an air port therethrough, a mixing chamber and a-n adjacent auxiliar mixing chambervvith-l in the casing, a dlaphragm between said chambers provided with a plurality of ports and an' integral boss, a rod carried by said boss land cover plate'with a valve rotatably mounted thereon, .means adapted toregister with the said diaphragm ports and the cover lplate ports, and an automatic valve rotataly mounted Within the auxiliary chamber. 9. A carbureter, comprising acasing with a mixing chamber'and an auxiliary mixing chamber formed therein, a diaphragm be- ;tWeen said chambers provided with a plurality of ports and a central'boss, a valve rota-f tably mounted Within the mixing chamber,-

a valve rotatably mounted Within the auxiliary chamber with an arm secured thereto a 10. A carbureter, comprising a casing, a tubular member secured to said casing, means connected to the tubular member forsupplyi ing a gaseous mixture to a mixing chamber formed within the-casing, an auxiliary -mixing chamber adjacent said ,mixing chamber, means mounted within the mixing chamber for regulating the mixture passed to the auxiliary chamber, and means mounted within ,the last named chamber for admitting fresh air from different directions'. g 11. A carbureter, comprising means for supplying a gaseous mixture to a mixing' chamber, an auxiliary mixing 'chamber adjacent to said mlxmg chamber, means mount- 'e'd Within the mixing chamber for regulating the volume of gaseous mixture passed4 to the auxiliary chamber, and means mounted within said auxiliary chamber for supplyin fresh air to the gaseous mixture from di erent directions.

REGINALD HODGKINS.

\ SYDNEY C LIFTON. 4

. for opening the valve, and means secured to said arm and boss for automatically closing 

